[Sir, are you quoting Archimedes at him? Kind of a weird context to use it in, but it sounds apt for entirely different reasons, so he'll allow it with a bashful chuckle. He stands on tiptoe for a few seconds, almost bounding back and forth, before setting his heels back down.]

The sky, actually. See, after we lost the compass to Harrow, we needed a different way to find the resting place of Ammit's last avatar. And her ushabti. So we got our hands on an old star chart. Celestial navigation. Ancient Egyptians were brilliant when it comes to stuff like that. But- and there's the snag- stars move over time. Just wee little bit, right? Not noticeable for a lifetime, but when you add that up over millennia? That's enough to leave an impact. A star chart made two thousand years ago couldn't compare to the sky as it is now. To that.

[He points up towards the sky, with all its glimmering stars and visible constellations.]